1. Myre, G. (2022, April 26). How the Soviet Union’s Collapse Explains the Current Russia-Ukraine Tension. Available online: https://www.npr.org/2021/12/24/1066861022/how-the-soviet-unions-collapse-explains-the-current-russia-ukraine-tension.
2. (2022, April 01). Gorbachev, Last Soviet Leader, Resigns. Available online: https://nsarchive.gwu.edu/sites/default/files/2021-12/NYT%20front%20page%201991-12-26_1.jpg.
3. Marques, C.F. (2022, March 26). Who Saw the Collapse of the USSR Coming? Bloomberg Opinion. Available online: https://www.bloomberg.com/opinion/articles/2021-12-24/what-caused-the-soviet-union-to-collapse-30-years-ago.
4. The Soviet state, born of a dream, dies;Schmemann;New York Times,1992
5. Bradshaw, M., and Stenning, A. (2004). East Central Europe and the Former Soviet Union: The Post-Socialist States, Routledge.